Alright so there isnt much I have to say here but Im writing a story about Hell's Reapers, basically its my own take on the seven sins which I know is overused but its just for some practice, my rough idea was that seven demons act as servants to Death and collect the souls going down but apart from that I have no idea where to take it, so any suggestions?

So what you have right now is a premise, but in order to create a story, you need to develop a plot. I like to tie my plots to character development- who are my characters now, and what do I want them to learn and how do I want them to change throughout the story? Then I figure out how to make that happen for them, through the plot.